I've an recently installed SSL certificate on my small website and
I'm trying to puzzle out steps to make some pages point particularly to https and
other point simply to http.

For instance, if a person is on my small website browsing my web pages via https,
and that i just have my recommendations contributing to us page to become http, is possible?

I understand you could do with hard coding all the links on the website however i am and curently have setup relative links.

It is possible to method to maybe give a establishing the .htaccess file which will point the server to http when someone attempted to go to my recommendations contributing to us page?

Write below code inside your .htaccess file

RewriteEngine On

RewriteCond %{HTTPS} off
RewriteCond %{REQUEST_URI} Page-1 [OR]
RewriteCond %{REQUEST_URI} page-2 
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

If you work with php you'll be able to place the following codes inside your files.

To Redirect from HTTP to HTTPS:

if(empty($_SERVER['HTTPS']))
{
   header("Location: https://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']);
}

To Redirect from HTTPS to HTTP:

if(!empty($_SERVER['HTTPS']))
{
   header("Location: http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']);
}